Download multiple .txt files into .zip file with PHP - php

Question

Now in system it is possible to download .txt file generated from MySQL table row. I am trying to make it possible to download all .txt files in one zip file. Actually, I stuck on the point where I am not sure if my approach is possible.
if (isset($_POST["ExportAll"])) {
$query = $con->query("SELECT id, filename FROM thistable");
$MultiArray = Array();
while($result = $query->fetch_assoc()){
$rowArray = Array();
$rowArray[] = $result['id'];
$rowArray[] = $result['filename'];
$MultiArray[] = $rowArray;
}
foreach ($MultiArray as $arg) {
$query = "SELECT * FROM thistable WHERE id LIKE '" . $arg[0] . "';";
$result = mysqli_query($con, $query);
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename=' . $arg[1] );
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
$output = fopen("php://output", "w");
while ($row = mysqli_fetch_assoc($result)) {
foreach(array_slice($row,2) as $line) {
echo ("$line \r\n");
}
}
fclose($output);
}
}
It is possible to put all $output values into some kind of $zipArray = Array() and then download it with header("Content-type: application/zip");
?

Answer 1

Yes you can download multiple text files as single zip file using php ZipArchive class. This is sample only you can try with your own scenario.
$zipname = 'sample.zip';
$zip = new ZipArchive;
$zip->open($zipname, ZipArchive::CREATE);
$files_array = ["sample1", "sample2"]; // List of file names
foreach ($files_array as $file) {
$row = ["Line 1", "Line 2", "Line 3", "Line 5"]; // Assuming as your table row
$filename = $file.".txt";
$lines_to_add = "";
foreach(array_slice($row, 2) as $line) {
$lines_to_add .= $line."\r\n";
}
$zip->addFromString($filename, $lines_to_add); // Adding lines to file
}
$zip->close();
header('Content-Type: application/zip');
header('Content-disposition: attachment; filename='.$zipname);
header('Content-Length: ' . filesize($zipname));
readfile($zipname);
unlink($zipname); // Remove zip file if you don't want be in server